package com.example.smartlearning.tool.BaiDU;


import org.json.JSONObject;
import okhttp3.*;


import java.io.*;

/**
 * 百度云
 * 语音识别工具类
 */
public class SpeechRecognition {
    public static final String API_KEY = "";
    public static final String SECRET_KEY = "";

    static final OkHttpClient HTTP_CLIENT = new OkHttpClient().newBuilder().build();

    public static void main(String[] args) throws IOException {
        MediaType mediaType = MediaType.parse("application/json");
        RequestBody body = RequestBody.create(mediaType, "{\"format\":\"pcm\",\"rate\":16000,\"channel\":1,\"cuid\":\"9Cm99GEido2lfrVCOMFY0qK0NuLTWIcH\",\"token\":\"\",\"token\":\"" + getAccessToken() + "\",\"token\":\"::token\"}");
        Request request = new Request.Builder()
                .url("https://vop.baidu.com/server_api")
                .method("POST", body)
                .addHeader("Content-Type", "application/json")
                .addHeader("Accept", "application/json")
                .build();
        Response response = HTTP_CLIENT.newCall(request).execute();
        if (response.body() != null) {
            System.out.println(response.body().string());
        }

    }


    /**
     * 从用户的AK，SK生成鉴权签名（Access Token）
     *
     * @return 鉴权签名（Access Token）
     * @throws IOException IO异常
     */
    static String getAccessToken() throws IOException {
        MediaType mediaType = MediaType.parse("application/x-www-form-urlencoded");
        RequestBody body = RequestBody.create(mediaType, "grant_type=client_credentials&client_id=" + API_KEY
                + "&client_secret=" + SECRET_KEY);
        Request request = new Request.Builder()
                .url("https://aip.baidubce.com/oauth/2.0/token")
                .method("POST", body)
                .addHeader("Content-Type", "application/x-www-form-urlencoded")
                .build();
        Response response = HTTP_CLIENT.newCall(request).execute();
        return new JSONObject(response.body().string()).getString("access_token");
    }
}
